Liquid filling and indicating device.



PATE'NTED MAY 5, 1903.

J. W. JOHNSON. LIQUID FILLING AND INDIGATING DEVICE. APPLIOAVTION IILBD APR. 15, 1902.

No MODEL.

witness N m: Monms PETiRS co, Pno-roumo" wasuma'rou. n. c.

Patented May 5, 1903,

UNITED STAT SPATENT OFFICE.

JOEL W. JOHNSON, OF HARTFORD, OONBIECTICUT.

LIQUID FILLING AND IN D|CAT|NG DEVICE.

'SPECIFIGATIGN forming part of Letters Patent No. 727,144, dated May '5, 1903.

Appilicaton filed April 15, 1902. Serial No. 103;06l. (Ilo model.) 7

To all whom it may concern.-

Be it known that I, JOEL W. JOHNSON, a citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Liquid Filling and Indicating Devices, of which the following is a specification.

The object of the improvement is the production of a device for use in filling a vessel with liquid where the interior is not readily observable and indicating the fact when the vessel is properly filled.

In the accompanying drawings, Figure l is a perspective view of the device. Fig. 2 is a view of the same in central vertical section. Fig. 3 is a View of the same in use-a sectional view much like Fig. 2, except on a smaller scale, and with a corresponding sec tion of the vessel which is to be filled. Fig.-

4 is a View similar to Fig. 3 with the vessel filled and the fact indicated.

The device is shown and described herein as applied to the filling ofthe body of a lamp with oil.

In the accompanying drawings the letter a denotes the body of the lamp.

The letter 1) denotes the body of the device which forms the subject-matter of said improvemen t. It has a filling-conduit b, which runs from the top of the device downward and opens out at the side thereof. It has an air-vent b and an indicator-orifice-that is, an orifice for the play of the indicator-rod 11 The letter 0 denotes the indicator-rod, and (1 denotes a float, of cork or the like.

The device-body b has underneath the recess b and the float d is attached to the indicator-rod within this recess. By preference the attachment of the indicator-rod to the float is centrally of the float.

The letter 6 denotes a support for the device-body b and its appurtenances, which may be made in the form of a collar or flange, as shown, or of anysuitable material and construction.

The device is shown as inserted through the ordinary filling-orifice of the lamp-body a; but it maybe of a shape and construction which will allow it to be used in the central wick-opening of the body.

The letter f denotes a tunnel which sits into the top of the filling-conduit b. It may be made fast to the device body b; but by preference it is separable.

The operation of the device is apparent from the description. The oil is poured into the tunnel and flows into the lamp through the filling-conduit. When the oil strikes the cork, the indicator rises asthe liquid rises and indicates the fact that it is time to stop the pouring.

In the foregoing description the air-vent is mentioned as apart and distinct from the indicator-orifice, and I prefer that to be the case; but it is practicable to a degree to make the indicator-orifice large enough to also act as an air-vent, and such case of combined airvent and indicator-orifice'is within the purview of my invention.

I claim as my improvement 7 1. In a device of the class specified, a body or plug having a filling-conduit opening at the side, an air-vent, an indicator-rod passing through an opening in the body or plug,

and the float attached to said indicator-rod and extending into a cavity in the plug, substantially as described andfor the purposes v JOEL W. JQI'INSON.

Witnesses:

W. E. SIMoNDs, D. I. KREIMENDAHL. 

